Tranny on my z28

Hello, I have a 2000 z28 Camaro, and I’m having problems with it slipping at high speed. and I noticed today that fluid is leaking and the car loses power as it warms up. it runs great starts right up, just having problems with the tranny. Can someone give me some idea’s about what may be going on, I do check the fluid and fill it when it needs it. and it runs great until I need to get up to around 50mph. Tell me your thoughts and an estimate of what it could cost to get repaired please?

I would take your Z28 to a good independent transmission shop and have things checked out. Let them give you the cost estimates because it’s nearly impossible to give a correct quote without seeing what’s actually going on. Avoid the chain transmission shops at all cost.